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Oily sewage purification net membrane and preparation method and application thereof

A technology for sewage purification and oily sewage, applied in chemical instruments and methods, separation methods, water/sewage treatment, etc., can solve the problems of long degradation time and low treatment efficiency, and achieve high separation efficiency, simple equipment and production process. , the effect of reducing chemical oxygen consumption

Active Publication Date: 2012-11-07
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these three technical solutions have the effect of photodegrading pollutants, the treatment efficiency of insoluble oil in oily sewage is too low, and the degradation time is too long

Method used

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  • Oily sewage purification net membrane and preparation method and application thereof
  • Oily sewage purification net membrane and preparation method and application thereof
  • Oily sewage purification net membrane and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Example 1, preparation of oily sewage purification omentum with superhydrophobic and superoleophilic properties

[0038] (1) Dip the 300-mesh copper mesh (i.e. copper fiber fabric mesh) into ethanol and acetone for ultrasonic cleaning for 5 minutes, and dry at room temperature;

[0039] (2) At room temperature, add 4ml of TiCl with a mass fraction of 20% in a 100ml beaker 3 solution and 36ml deionized water, mixed with stirring to obtain 0.15M TiCl 3 solution, and then add 15g NaCl to the solution to make the solution saturated with NaCl.

[0040] (3) Add the mixed solution obtained in step 2 into a 45ml Teflon reactor, and immerse the copper grid treated in step 1 into the solution in the Teflon reactor, and then heat the reactor at 160°C for 2 hours.

[0041] (4) After taking out the copper mesh in the reaction kettle of step 3, wash it with deionized water and ethanol, then dry it at room temperature to obtain TiO 2 Covered copper mesh.

[0042] (5) At room tempera...

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Abstract

The invention discloses a net membrane with oily sewage purification capability and a preparation method and application thereof. The oily sewage purification net membrane is an A / B double-layer composite net membrane, wherein the A layer of net membrane is formed by depositing a TiO2 coating on the net wire surface of a fabric net; and the B layer of net membrane is arranged on the surface of the A layer of net membrane and provided with a photodegradable hydrophobic modifier layer. The oily sewage purification net membrane can be used for simultaneously implementing oil-water separation of oily sewage and degradation of soluble pollutants. The net membrane has super-hydrophobic and super-oleophyllic properties in air, the contact angle between the net membrane and water in the air is more than 150 degrees, and the net membrane has good photo-catalytic property under ultraviolet. The net membrane can be applied to purification, chemical separation, environmental protection and the like of the oily sewage. The net membrane for sewage purification has the advantages of good separation effect, high purification efficiency, low cost, low energy consumption, convenience and the like.

Description

technical field [0001] The invention relates to an omentum for purifying oily sewage with superhydrophobic and superoleophilic properties, a preparation method and application thereof. Background technique [0002] Sewage purification is a work of great significance in production and life. According to the content of oil and water, it can be roughly divided into two categories: oily sewage and watery waste oil. Oily sewage comes from a wide range of sources, such as oil spills, ship ballast water, land The exploitation of petroleum ore in the world, as well as many industries such as food, textile, mechanical processing, and tanning, will discharge a large amount of oily sewage into the environment. Oily sewage endangers human health and safety, pollutes the environment, and even destroys ecological balance. However, in today's world where water resources and energy are in short supply, the oil-water separation and water purification of this oily sewage has become a hot topi...

Claims

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Application Information

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IPC IPC(8): B01D39/14C02F1/40C02F1/32C02F1/30C02F1/58B01D17/022B01J35/02B01J21/06B01J23/72
Inventor 冯琳高常锐孙中雪陈雨宁张诗妍
Owner TSINGHUA UNIV
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